Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: quantos títulos de futebol americano ACC foram conquistados pela instituição apelidada de tar heels?
 ###Tabelas: CREATE TABLE member_schools (member_schools_id AUTO_INCREMENT PRIMARY KEY, Institution VARCHAR, Nickname VARCHAR, Location VARCHAR, Founded INT, Joined ACC INT, School Type VARCHAR, ACC Football Titles INT) CREATE TABLE wairoa_district (wairoa_district_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Years VARCHAR, Gender VARCHAR, Area VARCHAR, Authority VARCHAR, Decile INT, Roll INT) CREATE TABLE sheffield_united_career (sheffield_united_career_id AUTO_INCREMENT PRIMARY KEY, Division VARCHAR, League Apps (Sub) INT, League Goals INT, FA Cup Apps (Sub) VARCHAR, FA Cup Goals INT, FL Cup Apps (Sub) INT, FL Cup Goals INT, Other Apps INT, Other Goals INT, Total Apps (Sub) VARCHAR, Total Goals INT) CREATE TABLE lpga_tour_career_summary (lpga_tour_career_summary_id AUTO_INCREMENT PRIMARY KEY, Year INT, Tournaments played INT, Cuts made INT, Wins INT, 2nd INT, 3rd INT, Top 10s INT, Best finish VARCHAR, Earnings ( $ ) INT, Money list rank VARCHAR, Scoring average VARCHAR, Scoring rank VARCHAR) CREATE TABLE data (data_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Year INT, Landfall VARCHAR, NHC Advisory Number VARCHAR, V(mph) INT, R(miles) INT, Saffir-Simpson Category INT, CHI VARCHAR)  
SELECT ACC Football Titles FROM member_schools WHERE Nickname = Tar Heels